#1 Puppy proof! You'd be surprised what a Yorkie will fit through, get into same with any puppy-but Yorkies are lil guys so you have to be extra careful you have a secure area!
#2 I prefer to use a raised feeder I got mine from Bella Cottage-they are super cheap here and gorgeous! Here's a link
4" White Pet Feeder - The Bella Cottage
#3 A lot of people on here prefer Billy Sticks-NO RAWHIDE ever!
#4 safe treats for small dogs-I really like Zuke's mini naturals for treats they are specific to small dogs here's a link (honestly though using plain chicken breast you cut yourself works great too)
Zukes Mini Naturals – Dog Training Treats, The Perfect Training Treat for Dogs
#5 Harness no collar-make sure you have a really good harness-Yorkie's have sensitive necks and collars can irritate their hair and their throats have a sensitive Trachea I use this one for both a car seat and for walking (I also have orange reflective ones I use for walking but this is for when going in the car). This is super cheap here also!
Dog Car Safety Restraint Seat Belt Harness 7-15" Chest Pink Camo - eBay (item 350373860862 end time Dec-10-10 18:01:03 PST) (I put the ID tags on the D-ring of the harness just like you would on a collar-get ID tags!)
#6 Get your baby microchipped it's a national average of $40 and can bring your baby home and save his/her life!
#7 When in doubt post it on YT-people here are awesome and love to help with all kinds of things and advice (I'm one of those who just tells people what I do personally like crate train: use a BIG crate and stick to it! I use my own shampoo as I don't like dog shampoos really etc-I figure people can take or leave my advice but best I say what I really do and open myself up to getting advice about what I do too).
Congratulations! We want updates and pics!